WO2011110034A1 - 广播消息的资源指示信息的传输方法和系统 - Google Patents

广播消息的资源指示信息的传输方法和系统 Download PDF

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Publication number
WO2011110034A1
WO2011110034A1 PCT/CN2010/079186 CN2010079186W WO2011110034A1 WO 2011110034 A1 WO2011110034 A1 WO 2011110034A1 CN 2010079186 W CN2010079186 W CN 2010079186W WO 2011110034 A1 WO2011110034 A1 WO 2011110034A1
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WIPO (PCT)
Prior art keywords
indication information
transmission mode
broadcast message
transmission
resource indication
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Application number
PCT/CN2010/079186
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English (en)
French (fr)
Inventor
陈宪明
关艳峰
宁丁
鲁照华
张磊
Original Assignee
中兴通讯股份有限公司
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Publication of WO2011110034A1 publication Critical patent/WO2011110034A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W72/00Local resource management
    • H04W72/20Control channels or signalling for resource management
    • H04W72/23Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W4/00Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present invention relates to a resource indication method in a wireless communication system, and in particular to a method and system for transmitting resource indication information of a broadcast message.
  • a base station is a basic unit constituting a wireless cell, and completes communication and management functions between a mobile communication network and a mobile communication user, and communicates with the terminal through an uplink/downlink, wherein the downlink refers to The direction from the base station to the terminal, and the uplink refers to the direction from the terminal to the base station.
  • a plurality of terminals may simultaneously transmit data to the base station through the uplink, or may simultaneously receive data from the base station through the downlink.
  • 1 is a schematic diagram of a downlink control structure of the IEEE 802.16m standard.
  • a radio resource is divided into consecutive superframes (SUs) in time, and each superframe has a duration of 20 milliseconds.
  • each superframe there are four 5 millisecond frames (Frame), and the frame is composed of 8 subframes (Subframes, referred to as SFs), and each subframe includes thousands of orthogonal frequency division multiple accesses (Orthogonal Frequency Division Multiple, Referred to as OFDM) symbol.
  • OFDM Orthogonal Frequency Division Multiple
  • the first subframe of each superframe does not include an OFDM symbol for synchronization, and includes a downlink broadcast control channel for carrying key system configuration information or parameters, and therefore, the subframe is It is called SFH subframe.
  • each downlink subframe includes a unicast traffic control channel (Advanced-MAP, AMAP for short).
  • the downlink control channel includes a synchronization channel (SCH), a broadcast control channel and a single
  • SCH synchronization channel
  • the base station transmits the system important parameters and the basic configuration information of the system to the terminal on the broadcast control channel.
  • the base station transmits a single terminal user or a group of terminal user-specific control information through the unicast service control channel, including resource allocation.
  • Information, terminal transmit power adjustment information, feedback information of hybrid automatic repeat request, etc.
  • non-user-specific control information (Non-User Specific, NUS for short) is also transmitted on the unicast service control channel.
  • the control information does not belong to one or a group of specific end users, and mainly indicates the decoding information of the user's proprietary control information.
  • the base station needs to periodically or non-periodically broadcast multiple types of messages to all mobile terminals through the downlink traffic channel, such as system configuration description message, service indication message, initial Ranging confirmation message, downlink interference suppression message, neighbor cell notification message, paging message, power control message, etc., it should be noted that these messages may be updated during the process of sending, or carry important indication information,
  • the terminal can work normally only after successfully obtaining some of the above broadcast messages.
  • the method is to make the resource indication information and the broadcast message of the broadcast message use a lower order modulation coding mode than the unicast or multicast.
  • the current scheme adopted by the IEEE 802.16m standard only considers that, under the premise that the terminal correctly receives the resource indication information of the broadcast message, the correct reception probability of the broadcast message is improved, that is, only a lower order is used.
  • the modulation coding mode is used to transmit the broadcast message; and the resource indication information of the broadcast message is still the same transmission mode as the resource indication information of the unicast or multicast message (for example, modulation and coding mode), that is, no relative use
  • a more reliable transmission method to send resource indication information of a broadcast message will be disadvantageous for the correct reception of the resource indication information of the broadcast message, thereby affecting the terminal's final reception of the broadcast message.
  • a primary object of the present invention is to provide a method and system for transmitting resource indication information of a broadcast message, to solve the problem of broadcasting in the related art that the resource indication information of the broadcast message is transmitted by using a relatively more reliable transmission mode.
  • a method for transmitting resource indication information of a broadcast message including: a base station setting a transmission mode according to a current transmission condition; and transmitting, by the base station, resource indication information of a broadcast message according to the set transmission mode.
  • the terminal decodes the resource indication information of the broadcast message according to the transmission mode.
  • the base station sets the transmission mode according to the current transmission condition, and includes one of the following: each parameter in the transmission mode is respectively set to a determined value according to the current transmission condition; or each of the transmission modes is determined according to the current transmission condition.
  • the parameters are respectively set to a range of values, and a certain value is selected for the parameter from the range of values in which each parameter is located; or according to the current transmission
  • the condition sets one or more parameters in the transmission mode to a certain value, and sets other parameters in the transmission mode to a value range, and from the range of values of each of the other parameters. This parameter selects a certain value. Further, after selecting a certain value for the parameter from the value range in which each parameter is located, or selecting a certain value for the parameter from the value range of each of the other parameters, the method further includes The base station sends indication information to the terminal, where the indication information is used to indicate the selected determined value.
  • the terminal acquires the determined value corresponding to each parameter in the transmission mode according to the current transmission condition;
  • the transmission condition sets one or more parameters in the transmission mode to a certain value
  • the terminal acquires the determined value corresponding to one or more parameters in the transmission mode according to the current transmission condition.
  • the transmission mode includes at least one of the following parameters: a resource size, a resource start location, a resource termination location, a modulation mode, and an encoding mode.
  • the coding mode includes at least one of the following: a channel coder type, a coding rate of the channel coder, and a repetition number.
  • the indication information is set in at least one of the following: a non-user-specific control information unit, an extended non-user-specific control information unit, a primary superframe header, a secondary superframe header, and a management message.
  • the current transmission condition includes at least one of the following: a transmission power size, a current channel quality condition, and a frequency partition type for transmission.
  • the modulation coding rate corresponding to the transmission mode is less than or equal to the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message or the multicast message.
  • the modulation coding rate is obtained by the following steps: Calculating the product of the modulation order and the coding rate, wherein the coding rate is the product of the coding rate of the channel coder and the reciprocal of the number of repetitions.
  • the resource indication information of the broadcast message is located in the extended non-user-specific control information element.
  • a transmission system for broadcasting message resource indication information including: a base station and a terminal, where the base station is configured to set a transmission mode according to a current transmission condition, And transmitting the resource indication information of the broadcast message to the terminal according to the set transmission manner; the terminal, configured to decode the resource indication information of the broadcast message according to the transmission manner.
  • the base station includes: a sending unit, configured to send indication information to the terminal, where the indication information is used to indicate a transmission mode. Further, the base station further includes: a modulation and coding unit, configured to perform modulation modulation on the resource indication information of the broadcast message by using a modulation and coding rate corresponding to the transmission mode, where the modulation and coding rate corresponding to the transmission mode is less than or equal to the unicast message The resource of the multicast message indicates the modulation coding rate corresponding to the transmission mode of the information.
  • the base station includes at least one of the following: a first setting unit, configured to set each parameter in the transmission mode to a determined value according to a current transmission condition; and a second setting unit, configured to use, according to the current transmission Condition: each parameter in the transmission mode is set to a value range, and a certain value is selected for the parameter from the value range in which each parameter is located; the third setting unit is configured to be based on the current transmission Condition that one or more parameters in the transmission mode are respectively set to a certain value, and other parameters in the transmission mode are respectively set to a value range, and each parameter from the other parameters is located A certain value is selected for the parameter in the range of values.
  • the invention has the following beneficial effects:
  • the base station Since the base station sets the transmission mode according to the current transmission condition, the transmission mode can be dynamically adjusted according to different transmission conditions, thereby ensuring the correct reception of the resource indication information of the broadcast message;
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is smaller than the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message or the multicast message, thus, the lower modulation
  • the coding rate facilitates the receiving end to decode the received data, thereby further improving the correct reception probability of the resource indication information of the broadcast message, thereby further improving the correct reception rate of the broadcast message.
  • FIG. 1 is a schematic diagram of a downlink control structure of an IEEE 802.16m standard according to the related art
  • FIG. 2 is a schematic diagram of a transmission system of resource indication information of a broadcast message according to an embodiment of the present invention
  • FIG. 3 is a broadcast according to an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of a structure of a unicast service control channel according to an embodiment of the present invention
  • FIG. 5 is a unicast service control channel according to an embodiment of the present invention.
  • FIG. 6 is still another schematic diagram of a unicast service control channel structure according to an embodiment of the present invention
  • FIG. 7 is still another schematic diagram of a unicast service control channel structure according to an embodiment of the present invention.
  • 8 is a schematic diagram of an SFH subframe structure according to an embodiment of the present invention.
  • the transmission system of the resource indication information of the broadcast message includes: a base station 21 and a terminal 22.
  • the base station 21 sets the transmission mode according to the current transmission condition, and sends the resource indication information of the broadcast message to the terminal 22 according to the set transmission mode.
  • the terminal 22 decodes the resource indication information of the broadcast message according to the above transmission manner.
  • the base station 21 sets the transmission mode according to the current transmission condition, including one of the following:
  • the first setting unit in the base station 21 sets each parameter in the transmission mode to a certain value according to the current transmission condition
  • the second setting unit in the base station 21 sets each parameter in the transmission mode to a value range according to the current transmission condition, and selects a certain value for the parameter from the value range in which each parameter is located. ; or 3)
  • the third setting unit in the base station 21 sets one or more parameters in the transmission mode to a certain value according to the current transmission condition, and sets other parameters in the transmission mode to a value range, respectively, and A value is selected for the parameter in the range of values in each of the other parameters.
  • the foregoing transmission manner includes at least one of the following parameters: a resource size, a resource start location, a resource termination location, a modulation mode, and an encoding mode.
  • the foregoing transmission condition includes at least one of the following: a transmission power size, a current channel quality condition, and a frequency partition type for transmission. Since the base station sets the transmission mode according to the current transmission condition, the transmission mode can be dynamically adjusted according to different transmission conditions, thereby ensuring correct reception of the resource indication information of the broadcast message.
  • the base station 21 and the terminal 22 set the same transmission method by one of the following methods:
  • the base station After selecting a certain value for the parameter from the range of values in which each parameter is located, or selecting a certain value for the parameter from the range of values of each of the other parameters, the base station The terminal sends the indication information, where the indication information is used to indicate the selected determined value;
  • the terminal acquires the determined value corresponding to each parameter in the transmission mode according to the current transmission condition;
  • the terminal acquires the determined corresponding one or more parameters in the transmission mode according to the current transmission condition.
  • the base station sends the indication information to the terminal, where the indication information is used to indicate the transmission mode used by the base station.
  • the base station 21 includes: a modulation and coding unit 212 and a transmission unit 211 that are sequentially connected.
  • the modulation and coding unit 212 modulates and encodes the resource indication information of the broadcast message by using a modulation and coding rate corresponding to the foregoing transmission mode, where the modulation and coding rate corresponding to the foregoing transmission mode is less than or equal to the unicast message.
  • the resource of the multicast message indicates the modulation coding rate corresponding to the transmission mode of the information.
  • the sending unit 211 will broadcast the resource indication letter of the message.
  • the information is sent to the terminal 22.
  • the sending unit 211 can also send the indication information to the terminal 22.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is smaller than the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message or the multicast message, so that the lower order modulation coding mode is advantageous for receiving
  • the terminal decodes the received data, thereby further improving the correct reception probability of the resource indication information of the broadcast message, thereby further improving the correct reception rate of the broadcast message.
  • the terminal 22 includes: a receiving unit 221 and a decoding unit 222 that are sequentially connected. In the working state, the receiving unit 221 receives the broadcast message resource indication information sent by the sending unit 211.
  • the receiving unit 221 can further receive the foregoing indication information sent by the sending unit 211.
  • the indication information is set in at least one of the following: a non-user-specific control information unit, an extended non-user-specific control information unit, a primary superframe header, a secondary superframe header, and a management message.
  • the method for transmitting broadcast message resource indication information of the present invention will be described below in conjunction with the system shown in FIG.
  • FIG. 3 is a flowchart of a method for transmitting broadcast message resource indication information according to an embodiment of the present invention. As shown in FIG. 3, the method for transmitting broadcast message resource indication information includes the following steps:
  • the base station sets a transmission mode according to the current transmission condition;
  • the base station sends the resource indication information of the broadcast message to the terminal according to the set transmission mode;
  • the terminal decodes the resource indication information of the broadcast message according to the foregoing transmission manner.
  • the base station sets the transmission mode according to the current transmission condition, including one of the following: 1) setting each parameter in the transmission mode to a certain value according to the current transmission condition; or
  • one or more parameters in the transmission mode are respectively set to a certain value, and other parameters in the transmission mode are respectively set to a value range, and each parameter from other parameters is located.
  • a certain value is selected for the parameter in the range of values.
  • the method further includes: the base station sending indication information to the terminal, where the indication information is used to indicate the selected determined value.
  • the indication information is set in at least one of the following: a non-user-specific control information unit, an extended non-user-specific control information unit, a primary superframe header, a secondary superframe header, and a management message.
  • a non-user-specific control information unit an extended non-user-specific control information unit
  • a primary superframe header a secondary superframe header
  • a management message a management message.
  • the terminal acquires each parameter in the transmission mode according to the current transmission condition.
  • the terminal acquires the transmission according to the current transmission condition The determined value corresponding to the one or more parameters in the manner.
  • the foregoing transmission manner includes at least one of the following parameters: a resource size, a resource start location, a resource termination location, a modulation mode, and an encoding mode.
  • the coding mode includes at least one of the following: a channel coder type, a coding rate of the channel coder, and a repetition number.
  • the foregoing transmission condition includes at least one of the following: a transmission power size, a current channel quality condition, and a frequency partition type for transmission. Since the base station sets the transmission mode according to the current transmission condition, the transmission mode can be dynamically adjusted according to different transmission conditions, thereby ensuring correct reception of the resource indication information of the broadcast message.
  • the modulation and coding rate corresponding to the transmission mode is less than or equal to a modulation coding rate corresponding to a transmission mode of the resource indication information of the unicast message or the multicast message.
  • the modulation coding rate is obtained by the following steps: calculating a modulation order and a coding speed a product of rates, wherein the coding rate is the product of the coding rate of the channel coder and the reciprocal of the number of repetitions.
  • the resource indication information of the broadcast message is located in the extended non-user-specific control information unit.
  • the base station and the terminal set the same transmission mode by using one of the following methods:
  • the base station After selecting a certain value for the parameter from the value range in which each parameter is located, or selecting a certain value for the parameter from the value range in which each of the other parameters is located, the base station proceeds to the terminal Sending indication information, where the indication information is used to indicate the selected determined value; or 2) when each parameter in the transmission mode is respectively set to a certain value according to the current transmission condition, the terminal is based on the current The transmission condition acquires a determined value corresponding to each parameter in the transmission mode; or
  • the terminal acquires the determined corresponding one or more parameters in the transmission mode according to the current transmission condition. value.
  • the indication information is set in at least one of the following: a non-user-specific control information unit, an extended non-user-specific control information unit, a primary superframe header, a secondary superframe header, and a management message.
  • the modulation and coding rate corresponding to the transmission mode is less than or equal to the modulation and coding rate corresponding to the transmission mode of the resource indication information of the unicast message or the multicast message.
  • FIG. 4 is a schematic diagram of a structure of a unicast service control channel according to an embodiment of the present invention. As shown in FIG.
  • the unicast service control channel includes: hybrid automatic repeat request feedback control channel (HARQ FB AMAP), Power Control Channel (PC AMAP), Non-User-Specific Control Channel (NUS AMAP), Extended Non-User-Specific Control Channel (Ext. NUS AMAP), Resource Allocation Control Channel (A AMAP ), where,
  • the automatic retransmission request feedback control channel is used to transmit HARQ feedback control information
  • the power control channel is used for transmitting power control information, non-user-specific control channels, and extended non-user-specific control channels for transmitting non-user-specific control.
  • the information (including broadcast information) and the resource allocation control channel are used to transmit unicast resource allocation control information.
  • the extended non-user-specific control channel is located behind the non-user-specific control channel.
  • the base station sets indication information. Specifically, the base station uses an information field of one bit in the non-user-specific control information unit in the primary frequency partition (Primary FP) to identify whether the extended non-user-specific control information exists in the current subframe, and uses the extended non-user.
  • the proprietary control information carries resource indication information of the broadcast message.
  • the contents of the non-user-specific control information are shown in Table 1, where the non-user-specific control information has a fixed binary bit information length:
  • the base station sets a transmission mode according to the current transmission condition, and sends the extended non-user-specific control information to the terminal according to the transmission mode. Specifically, the base station determines a modulation mode (for example, QPSK), and determines a coding mode (for example, the channel encoder is a tail-biting convolutional encoder, the initial coding rate is 1/4, and the repetition frequency is 3), and the determined resource starts.
  • the location (behind the non-user-specific control information), the determined resource size (determined by the bit length of the extended non-user-specific control information) sends the extended non-user-specific control information to the terminal. It is assumed that the base station is a modulation scheme using QPSK, and the initial coding rate is 1/2 or 1/4 and is repeated.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message is 1 or 1/2.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is 1/6, that is, in the embodiment, the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is smaller than the resource indication of the unicast message.
  • the extended non-user-specific control information element has a fixed binary bit information length, and includes one or a combination of the following: a resource allocation information unit type, a HARQ data packet size, a resource index, a long transmission time interval indicator, The specific broadcast message indicator, the broadcast message configuration change count, the broadcast channel identifier, the number of repeated transmissions of the broadcast message, and the repeated transmission period of the broadcast message.
  • the terminal decodes the non-user-specific control information, and determines whether there is extended non-user-specific control information. If yes, the non-user-specific control information, that is, the resource indication information of the broadcast message, of the above-defined modulation mode, coding mode, resource start location, and resource size is extended. In this embodiment, the terminal may acquire the transmission parameter in the foregoing transmission mode according to the current transmission condition.
  • Embodiment 2 Based on the unicast service control channel structure shown in FIG. 4, the method for transmitting the resource indication information of the corresponding broadcast message includes the following steps:
  • the base station sets indication information. Specifically, the base station uses an information field of 2 bits in the non-user-specific control information unit in the primary frequency partition (Primary FP) to identify whether the extended non-user-specific control information exists in the current subframe, and the information unit uses The modulation coding mode uses the extended non-user-specific control information to carry the resource indication information of the broadcast message.
  • the content of the non-user-specific control information is as shown in Table 2, wherein the non-user-specific control information has fixed binary bit information. length: Table 2
  • Unicast or multicast resource 8 bits Indicates the number of unicast or multicast allocation control channel large source allocation information units included in each resource allocation group
  • Downlink HARQ feedback 1 bit Indicates which parameter to use to calculate the downlink HARQ feedback channel index parameter channel index
  • Uplink HARQ feedback 1 bit Indicates which parameter to use to calculate the uplink HARQ feedback channel index parameter channel index
  • the modulation coding method is QPSK, 1/12 (the initial code rate is 1/4, and the number of repetitions is 3)
  • the base station sets a transmission mode according to the current transmission condition, and sends the extended non-user-specific control information to the terminal according to the transmission mode. Specifically, the base station determines the starting position of the resource (behind the non-user-specific control information), and determines the resource size (determined by the bit length of the extended non-user-specific control information) to send the extended non-user-specific control information. Give the terminal. It is assumed that the base station is a modulation method of QPSK, and the resource indication information (bearing on the A AMAP channel) for transmitting the unicast message is generated by the tail-biting convolutional coding method whose initial coding rate is 1/2 or 1/4 and the number of repetitions is 1.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message is 1 or 1/2, and in this embodiment, the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is 1/4, 1 /6 or 1/8, that is, in the embodiment, the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is smaller than the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message.
  • the extended non-user-specific control information element has a fixed binary bit information length, and includes one or a combination of the following: a resource allocation information unit type, a HARQ data packet size, a resource index, a long transmission time interval indicator, The specific broadcast message indicator, the broadcast message configuration change count, the broadcast channel identifier, the number of repeated transmissions of the broadcast message, and the repeated transmission period of the broadcast message.
  • the terminal decodes non-user-specific control information, and determines whether there is extended non-user-specific control Information. If yes, the extended non-user-specific control information, that is, the resource indication information of the broadcast message, is solved according to the determined modulation mode, coding mode, resource start location, and resource size. In this embodiment, the terminal may acquire the transmission parameters in the foregoing transmission mode according to the current transmission condition. S4, the terminal solves the broadcast data packet or burst (Burst) at the determined time-frequency resource location according to the correctly decoded non-user-specific control information content, where the broadcast data packet or burst may be included. One or more broadcast messages.
  • the third embodiment is based on the unicast service control channel structure shown in FIG. 4, and the method for transmitting the resource indication information of the corresponding broadcast message includes the following steps:
  • the base station sets indication information. Specifically, the base station uses an information field of one bit in the non-user-specific control information unit in the primary frequency partition (Primary FP) to identify whether the extended non-user-specific control information exists in the current subframe, and uses the extended non-user.
  • the proprietary control information carries resource indication information of the broadcast message.
  • the contents of the non-user-specific control information are shown in Table 3, where the non-user-specific control information has a fixed binary bit information length:
  • the base station sets a transmission mode according to the current transmission condition, and sends the extended non-user-specific control information to the terminal according to the transmission mode.
  • the frequency partition based on the extended non-user-specific control information or the unicast service control information for example, the frequency partition with the multiplexing coefficient of 1 (considered as the current transmission condition)
  • the base station will expand the non-user-specific control
  • the modulation coding mode used by the information unit is determined as a range of values. For example, as shown in Table 4, the modulation coding mode may be QPSK 1/8 or QPSK 1/16.
  • the base station selects a value from a range of values of the modulation and coding mode, for example, QPSK 1/8, and sending indication information to the terminal, where the indication information indicates that the modulation and coding mode is QPSK 1/8.
  • the indication information is located in the super frame header.
  • the base station determines the resource starting position (behind the non-user-specific control information), and determines the resource size (determined by the bit length of the extended non-user-specific control information) to send the extended non-user-specific control information to terminal. Table 4
  • the base station is a modulation method of QPSK
  • the resource indication information (bearing on the A AMAP channel) for transmitting the unicast message is generated by the tail-biting convolutional coding method whose initial coding rate is 1/2 or 1/4 and the number of repetitions is 1.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message is 1 or 1/2
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is 1/4 or 1 in this embodiment.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is smaller than the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message.
  • the extended non-user-specific control information element has a fixed binary bit information length, and includes one or a combination of the following: a resource allocation information unit type, a HARQ data packet size, a resource index, a long transmission time interval indicator, The specific broadcast message indicator, the broadcast message configuration change count, the broadcast channel identifier, the number of repeated transmissions of the broadcast message, and the repeated transmission period of the broadcast message.
  • the terminal decodes the non-user-specific control information, and determines whether there is extended non-user-specific control information. If it exists, the extended non-user-specific control information, that is, the resource indication information of the broadcast message, is solved according to the determined modulation mode, coding mode, resource start location, and resource size.
  • the terminal may obtain part of the transmission parameters in the foregoing transmission mode according to the current transmission condition: an encoding mode, a resource starting location, and a resource size.
  • the terminal may further receive the indication information sent by the base station. Get the modulation method.
  • FIG. 5 is another schematic diagram of a unicast service control channel structure according to an embodiment of the present invention.
  • the unicast service control channel includes: a hybrid automatic repeat request feedback control channel (HARQ FB AMAP), a power control channel (PC AMAP), a non-user-specific control channel (NUS AMAP), and an extended non-user. a proprietary control channel (Ext.
  • NUS AMAP NUS AMAP
  • a AMAP resource allocation control channel
  • the hybrid automatic repeat request feedback control channel is used to transmit HARQ feedback control information
  • the power control channel is used to transmit power control information
  • the user-specific control channel and the extended non-user-specific control channel are used to transmit non-user-specific control information (including broadcast information)
  • the resource allocation control channel is used to transmit unicast resource allocation control information.
  • the extended non-user-specific control channel shown in FIG. 5 is located behind the resource allocation control channel.
  • the method for transmitting resource indication information of the broadcast message in the foregoing Embodiments 1 to 3 is also applicable to the unicast service control channel structure shown in FIG. 5.
  • the unicast service control channel includes: a hybrid automatic repeat request feedback control channel (HARQ FB AMAP), a power control channel (PC AMAP), a non-user-specific control channel (NUS AMAP), and a broadcast resource allocation control.
  • Broadcast A AMAP Unicast A AMAP, where the hybrid automatic repeat request feedback control channel is used to transmit HARQ feedback control information, the power control channel is used to transmit power control information, and the non-user specializes
  • control channels for transmitting non-user-specific control information a resource allocation control channel for transmitting broadcast resource indication information, and a unicast resource allocation control channel for transmitting unicast resource allocation control information.
  • the broadcast resource allocation control channel is located behind the non-user-specific control channel.
  • the method for transmitting the resource indication information of the corresponding broadcast message includes the following steps: S1.
  • the base station setting indication information is used to indicate whether the current frame has the resource indication information of the broadcast message.
  • the indication information is a mask bit, where the mask bit is obtained by masking the cyclic redundancy check bit with the broadcast identifier.
  • the base station sets a transmission mode according to the current transmission condition, and sends resource indication information of the broadcast message to the terminal according to the transmission mode. Specifically, the base station determines a modulation mode (for example, QPSK), and determines a coding mode (for example, the channel encoder is a tail-biting convolutional encoder, and the initial coding speed is The rate is 1/4, the number of repetitions is 3), the determined resource start position (behind the non-user-specific control information), and the determined resource size (determined by the bit length of the resource indication information of the broadcast message) to send the broadcast message The resource indicates information to the terminal.
  • a modulation mode for example, QPSK
  • a coding mode for example, the channel encoder is a tail-biting convolutional encoder, and the initial coding speed is The rate is 1/4, the number of repetitions is 3
  • the determined resource start position (behind the non-user-specific control information)
  • the determined resource size determined by the bit length of the resource indication information of the broadcast
  • the base station is a modulation method of QPSK
  • the resource indication information (bearing on the Unicast A AMAP channel) for transmitting a unicast message is generated by a tail-biting convolutional coding method with an initial coding rate of 1/2 or 1/4 and a repetition number of 1.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message is 1 or 1/2
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is 1/6, that is, in the embodiment.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is smaller than the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message.
  • the resource indication information unit of the broadcast message has a fixed binary bit information length, and includes one or a combination of the following: a resource allocation information unit type, a HARQ data packet size, a resource index, a long transmission time interval indicator, a specific broadcast.
  • the terminal determines, by means of blind detection, whether the current subframe has a resource indication information unit of a broadcast message. Specifically, after receiving the data source carrying the mask bit, the terminal generates a cyclic redundancy check bit on the terminal side according to the data source. Then, the terminal performs a mask operation on the terminal side cyclic redundancy check bit and the broadcast identifier to obtain a mask bit on the terminal side. Then, the mask bit on the terminal side is compared with the mask bit. If they are the same, the terminal determines that the broadcast message resource indication information exists in the current subframe. If yes, the resource indication information of the broadcast message is solved according to the determined modulation mode, coding mode, resource start location, and resource size.
  • the terminal may acquire the transmission parameter in the foregoing transmission mode according to the current transmission condition.
  • S4 the terminal solves the broadcast data packet or the burst (Burst) at the determined time-frequency resource location according to the resource indication information content of the correctly decoded broadcast message, where the broadcast data packet or the burst may include one or Multiple broadcast messages.
  • the fifth embodiment is based on the unicast service control channel structure shown in FIG. 6.
  • the method for transmitting the resource indication information of the corresponding broadcast message includes the following steps: 51.
  • the base station setting indication information is used to indicate whether the current frame has resource indication information of a broadcast message.
  • the indication information is a mask bit, where the mask bit is obtained by masking the cyclic redundancy check bit with the broadcast identifier.
  • the base station sets a transmission mode according to the current transmission condition, and sends the resource indication information of the broadcast message to the terminal according to the transmission mode.
  • the frequency indication based on the resource indication information of the broadcast message or the unicast service control information, for example, the frequency partition with the multiplexing coefficient of 1 (considered as the current transmission condition), the base station will expand the non-user-specific control information unit.
  • the modulation coding mode used is determined to be a range of values. For example, as shown in Table 5, the modulation coding mode may be QPSK 1/8 or QPSK 1/16.
  • the base station selects a value from the value range of the modulation and coding mode, for example, QPSK 1/8, and sends indication information to the terminal, where the indication information indicates that the modulation and coding mode is QPSK 1/8, and preferably, the indication The information is in the superframe header. Then, the base station determines the resource start position (behind the non-user-specific control information), and determines the resource size (determined by the bit length of the extended non-user-specific control information) to send the resource indication information of the broadcast message to the terminal.
  • a value from the value range of the modulation and coding mode for example, QPSK 1/8
  • the indication information indicates that the modulation and coding mode is QPSK 1/8, and preferably, the indication The information is in the superframe header.
  • the base station determines the resource start position (behind the non-user-specific control information), and determines the resource size (determined by the bit length of the extended non-user-specific control information) to send the resource indication information of the broadcast message
  • the base station is a modulation method of QPSK
  • the resource indication information (bearing on the Unicast A AMAP channel) for transmitting a unicast message is generated by a tail-biting convolutional coding method with an initial coding rate of 1/2 or 1/4 and a repetition number of 1.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message is 1 or 1/2, and in this embodiment, the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is 1/4 or 1/8, that is, in the embodiment, the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is smaller than the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message.
  • the resource indication information unit of the broadcast message has a fixed binary bit information length, and includes one or a combination of the following: a resource allocation information unit type, a HARQ data packet size, a resource index, a long transmission time interval indicator, a specific broadcast.
  • the message indicator, the broadcast message configuration change count, the broadcast channel identifier, the number of repeated transmissions of the broadcast message, and the repeated transmission period of the broadcast message.
  • the terminal determines, by means of blind detection, whether the current subframe has a resource indication information unit of a broadcast message. Specifically, after receiving the data source carrying the mask bit, the terminal generates a cyclic redundancy check bit on the terminal side according to the data source.
  • the terminal performs a mask operation on the terminal side cyclic redundancy check bit and the broadcast identifier to obtain a mask bit on the terminal side. Then, the mask bit on the terminal side is compared with the mask bit. If they are the same, the terminal determines that the broadcast message resource indication information exists in the current subframe. If yes, the resource indication information of the broadcast message is solved according to the determined modulation mode, coding mode, resource start location, and resource size.
  • the terminal may obtain part of the transmission parameters in the foregoing transmission mode according to the current transmission condition: an encoding mode, a resource starting location, and a resource size.
  • the terminal may obtain the modulation by receiving the indication information sent by the base station. the way.
  • FIG. 7 is still another schematic diagram of a unicast service control channel structure according to an embodiment of the present invention.
  • the unicast service control channel includes: a hybrid automatic repeat request feedback control channel (HalQ FB AMAP), a power control channel (PC AMAP), a non-user-specific control channel (NUS AMAP), and a unicast resource allocation.
  • HalQ FB AMAP hybrid automatic repeat request feedback control channel
  • PC AMAP power control channel
  • NUS AMAP non-user-specific control channel
  • unicast resource allocation unicast resource allocation.
  • Control channel (Unicast A AMAP), broadcast resource allocation control channel (Broadcast A AMAP), wherein the hybrid automatic repeat request feedback control channel is used to transmit HARQ feedback control information, the power control channel is used to transmit power control information, and the non-user specializes
  • the control channel is used for transmitting non-user-specific control information
  • the unicast resource allocation control channel is used for transmitting unicast resource allocation control information
  • the broadcast resource allocation control channel is used for transmitting resource indication information of the broadcast message.
  • the broadcast resource allocation control channel shown in FIG. 7 is located behind the unicast resource allocation control channel.
  • the method for transmitting resource indication information of the broadcast message in the above fourth to fifth embodiments is also applicable to the unicast service control channel structure shown in FIG. Embodiment 6 FIG.
  • the SFH subframe includes: a primary superframe header (P-SFH), a secondary superframe header (S-SFH), a broadcast resource allocation control channel (Broadcast A AMAP), and a unicast traffic control channel (A MAP). ), where, the Lord The superframe header is used for transmitting the decoding information of the secondary superframe header, the secondary superframe header is used for transmitting system information, the broadcast resource allocation control channel is used for transmitting the resource indication information of the broadcast message, and the unicast service control channel is used for transmitting other unicasts. Business control information. In this embodiment, the broadcast resource allocation control channel is located behind the secondary superframe header.
  • the method for transmitting the resource indication information of the corresponding broadcast message includes the following steps:
  • the base station uses an information field of one bit in the primary superframe header (P-SFH) to identify whether the current subframe has a broadcast message resource indication information element.
  • P-SFH primary superframe header
  • the base station does not use any subframe other than the SFH subframe to send a broadcast message; the content of the main superframe header is as shown in Table 6 below, wherein the primary superframe header has a fixed binary bit information length. Table 6
  • the base station sets a transmission mode according to the current transmission condition, and sends resource indication information of the broadcast message to the terminal according to the transmission mode. Specifically, based on the resource indication information of the broadcast message or the transmission power of the SFH subframe, for example, transmitting at a relatively low power (considering the current transmission condition), the base station uses the modulation of the extended non-user-specific control information unit.
  • the coding mode is determined to be a range of values. For example, as shown in Table 7, the modulation coding mode may be QPSK 1/8 or QPSK 1/16.
  • the base station selects a value from the value range of the modulation and coding mode, for example, QPSK 1/8, and sends indication information to the terminal, where the indication information indicates that the modulation and coding mode is QPSK 1/8, preferably The indication information is located in the superframe header. Then, the base station determines the resource starting position (behind the secondary superframe header), and determines the resource size (determined by the bit length of the resource indication information of the broadcast message) to send the resource indication information of the broadcast message to the terminal.
  • the base station is a modulation method of QPSK
  • the resource indication information (bearing on the A AMAP channel) for transmitting the unicast message is generated by the tail-biting convolutional coding method whose initial coding rate is 1/2 or 1/4 and the number of repetitions is 1.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message is 1 or 1/2
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is 1/4 or 1 in this embodiment.
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is smaller than the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message.
  • the resource indication information unit of the broadcast message has a fixed binary bit information length, and includes one or a combination of the following: a resource allocation information unit type, a HARQ data packet size, a resource index, a long transmission time interval indicator, a specific broadcast.
  • the terminal decodes the primary superframe header, and determines whether there is broadcast message resource indication information. If yes, the resource indication information of the broadcast message is solved according to the determined modulation mode, coding mode, resource start location, and resource size.
  • the terminal may obtain part of the transmission parameters in the foregoing transmission mode according to the current transmission condition: an encoding mode, a resource starting location, and a resource size.
  • the terminal may obtain the modulation by receiving the indication information sent by the base station. the way.
  • the terminal solves the broadcast data packet or burst (Burst) at the determined time-frequency resource location according to the correctly decoded broadcast message resource indication information content, where the broadcast data packet or burst may include one or more Broadcast messages.
  • the broadcast identifier refers to a base station reserved for broadcast messages and used as a decoded broadcast message resource.
  • An identifier of the indication information wherein the broadcast identifier has the same or a different form as the terminal identifier.
  • the broadcast message resource indication information unit uses the same low-order modulation coding mode as other message resource indication information units or other message resource indication information units.
  • the broadcast message resource indication information unit uses the same modulation and coding mode as the other message resource indication information unit, that is, the modulation and coding mode used by the broadcast message resource indication information unit is at least modulated with other message resource indication information units.
  • the modulation and coding mode used by the broadcast message resource indication information unit is at least modulated with other message resource indication information units.
  • One of the encoding methods is the same.
  • the method for transmitting the broadcast message resource indication information is applicable to a system supported by the IEEE 802.16 standard.
  • the invention has the following beneficial effects:
  • the base station Since the base station sets the transmission mode according to the current transmission condition, the transmission mode can be dynamically adjusted according to different transmission conditions, thereby ensuring the correct reception of the resource indication information of the broadcast message;
  • the modulation coding rate corresponding to the transmission mode of the resource indication information of the broadcast message is smaller than the modulation coding rate corresponding to the transmission mode of the resource indication information of the unicast message or the multicast message, thus, the lower modulation
  • the coding rate facilitates the receiving end to decode the received data, thereby further improving the correct reception probability of the resource indication information of the broadcast message, thereby further improving the correct reception probability of the broadcast message.
  • the computing device may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein.
  • the steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module.
  • the invention is not limited to any specific combination of hardware and software.
  • the above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modification, equivalent substitution, improvement, etc. made within the "God and Principles" of the present invention shall be included in the protection of the present invention. Within the scope.

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Description

广播消息的资源指示信息的传输方法和系统 技术领域 本发明涉及无线通信系统中的资源指示方法, 具体地, 涉及一种广播消 息的资源指示信息的传输方法和系统。 背景技术 在无线通信系统中, 基站是组成无线蜂窝小区的基本单元, 完成移动通 信网和移动通信用户间的通信和管理功能,其通过上 /下行链路与终端进行通 信, 其中, 下行是指基站到终端的方向, 而上行是指终端到基站的方向。 多 个终端可以通过上行链路同时向基站发送数据, 也可以通过下行链路同时从 基站接收数据。 图 1是 IEEE 802.16m标准的下行控制结构的示意图, 如图 1所示, 无线 资源在时间上被划分为连续的超帧 (Superframe, 简称 SU ), 每个超帧的时 长为 20 毫秒、。 而每个超帧中有 4 个 5 毫秒、的帧 (Frame ), 帧由 8 个子帧 ( Subframe, 简称 SF )组成, 每个子帧包含若千个正交频分多址( Orthogonal Frequency Division Multiple , 简称 OFDM )符号。 每个帧的第一个符号属于 同步信道, 用于下行同步。 每个超帧的第一个子帧 ( Superframe Header, 简 称 SFH ), 不包括用于同步的 OFDM符号, 包含下行广播控制信道, 用于承 载关键的系统配置信息或参数, 因此, 该子帧又称为 SFH子帧。 除 SFH子 帧以外, 每个下行子帧包含单播业务控制信道 ( Advanced-MAP , 简称 AMAP )„ 在当前的 IEEE 802.16m标准中, 下行控制信道包括同步信道 ( SCH ), 广播控制信道与单播业务控制信道。 基站在广播控制信道向终端发送系统重 要参数和系统的基本配置信息。 基站通过单播业务控制信道发送单个终端用 户或一组终端用户专有的控制信息, 这些信息包括资源分配信息、 终端发射 功率调整信息、 混合自动重传请求的反馈信息等。 另外, 单播业务控制信道 上还发送非用户专有的控制信息(Non-User Specific, 简称 NUS )。 非用户专 有的控制信息不属于一个或一组特定的终端用户, 主要指示用户专有控制信 息的解码信息。 釆用 IEEE 802.16m标准的无线通信系统在运行过程中,基站需要通过下 行业务信道周期性或非周期性地广播多种类型的消息给所有移动终端, 例如 系统配置描述消息、 业务指示消息、 初始测距确认消息、 下行千扰抑制消息、 相邻小区通知消息、 寻呼消息以及功率控制消息等, 需要指出, 这些消息在 其发送的过程中可能会有更新, 或者携带重要的指示信息, 移动终端只有成 功获取上述某些广播消息后才能够正常工作。 但相对单播消息, 由于广播消 息没有应用 HARQ的重传机制或者其它的反馈确认机制, 因此, 如果要保证 广播消息具有与单播消息相同或者高于单播消息的正确解码概率, 釆用的方 法就是使广播消息的资源指示信息和广播消息使用相对单播或组播更为低阶 的调制编码方式。 但是, 当前 IEEE 802.16m标准釆用的方案仅是考虑到, 在终端正确地接 收了广播消息的资源指示信息的前提下,提高所述广播消息的正确接收概率, 即仅使用更为低阶的调制编码方式来发送广播消息; 而对于广播消息的资源 指示信息,仍然是釆用与单播或组播消息的资源指示信息相同的传输方式(例 如, 调制编码方式), 即, 没有釆用相对更加可靠的传输方式来发送广播消息 的资源指示信息。 但是, 在不同的传输条件下, 釆用上述的传输方式将不利 于广播消息的资源指示信息的正确接收, 从而影响终端最终对广播消息的正 确接收。 发明内容 本发明的主要目的在于提供一种广播消息的资源指示信息的传输方法和 系统, 以解决相关技术中由于没有釆用相对更加可靠的传输方式来发送广播 消息的资源指示信息而造成的广播消息正确接收概率较低的问题, 从而提高 广播消息的正确接收 4既率。 根据本发明的一个方面, 提供了一种广播消息的资源指示信息的传输方 法, 其包括: 基站根据当前的传输条件设置传输方式; 基站按照所设置的传 输方式将广播消息的资源指示信息发送给终端; 终端按照传输方式对广播消 息的资源指示信息进行解码。 进一步, 基站根据当前的传输条件设置传输方式包括以下之一: 根据当 前的传输条件将传输方式中的每个参数分别设置为一个确定的值; 或者根据 当前的传输条件将传输方式中的每个参数分别设置为一个取值范围, 并从每 个参数所在的取值范围中为该参数选取一个确定的值; 或者根据当前的传输 条件将传输方式中的一个或多个参数分别设置为一个确定的值, 将传输方式 中的其他参数分别设置为一个取值范围, 并从其他参数中的每个参数所在的 取值范围中为该参数选取一个确定的值。 进一步, 在从每个参数所在的取值范围中为该参数选取一个确定的值、 或从其他参数中的每个参数所在的取值范围中为该参数选取一个确定的值 后, 方法还包括: 基站向终端发送指示信息, 其中, 指示信息用于指示所选 取的确定的值。 进一步, 在根据当前的传输条件将传输方式中的每个参数分别设置为一 个确定的值时, 终端根据当前的传输条件获取传输方式中的每个参数所对应 的确定的值; 在根据当前的传输条件将传输方式中的一个或多个参数分别设 置为一个确定的值时, 终端才艮据当前的传输条件获取传输方式中的一个或多 个参数所对应的确定的值。 进一步, 传输方式包括以下参数中的至少之一: 资源大小、 资源起始位 置、 资源终止位置、 调制方式、 编码方式。 进一步, 编码方式包括以下至少之一: 信道编码器类型、 信道编码器的 编码速率、 重复次数。 进一步, 指示信息设置在以下至少之一中: 非用户专有控制信息单元、 扩展的非用户专有控制信息单元、 主超帧头、 辅超帧头、 管理消息。 进一步, 当前的传输条件包括以下至少之一: 传输功率大小、 当前信道 质量状况、 用于传输的频率分区类型。 进一步, 与传输方式对应的调制编码速率小于或等于与单播消息或多播 消息的资源指示信息的传输方式对应的调制编码速率。 进一步, 通过以下步骤获取调制编码速率: 计算调制阶数与编码速率的 乘积, 其中, 编码速率为信道编码器的编码速率与重复次数的倒数的乘积。 进一步, 广播消息的资源指示信息位于扩展的非用户专有控制信息单元 内。 根据本发明的另一方面,提供了一种广播消息资源指示信息的传输系统, 其包括: 基站和终端, 其中, 基站, 用于根据当前的传输条件设置传输方式, 并按照所设置的传输方式将广播消息的资源指示信息发送给终端; 终端, 用 于按照传输方式对广播消息的资源指示信息进行解码。 进一步, 基站包括: 发送单元, 用于向终端发送指示信息, 其中, 指示 信息用于指示传输方式。 进一步, 基站还包括: 调制编码单元, 用于釆用与传输方式对应的调制 编码速率对广播消息的资源指示信息进行调制编码, 其中, 与传输方式对应 的调制编码速率小于或等于与单播消息或多播消息的资源指示信息的传输方 式对应的调制编码速率。 进一步, 基站包括以下至少之一: 第一设置单元, 用于 居当前的传输 条件将所述传输方式中的每个参数分别设置为一个确定的值;第二设置单元, 用于根据当前的传输条件将所述传输方式中的每个参数分别设置为一个取值 范围, 并从每个参数所在的取值范围中为该参数选取一个确定的值; 第三设 置单元, 用于根据当前的传输条件将所述传输方式中的一个或多个参数分别 设置为一个确定的值, 将所述传输方式中的其他参数分别设置为一个取值范 围, 并从所述其他参数中的每个参数所在的取值范围中为该参数选取一个确 定的值。 本发明具有以下有益效果:
1 ) 由于基站根据当前的传输条件来设置传输方式, 使得传输方式可以 按照不同的传输条件来动态调整, 从而保证了广播消息的资源指示信息的正 确接收;
2 ) 在本发明中, 与广播消息的资源指示信息的传输方式对应的调制编 码速率小于与单播消息或多播消息的资源指示信息的传输方式对应的调制编 码速率, 这样, 较低的调制编码速率有利于接收端对所接收到的数据进行解 码, 因此进一步提高了广播消息的资源指示信息的正确接收概率, 从而进一 步提高了广播消息的正确接收 4既率。 附图说明 此处所说明的附图用来提供对本发明的进一步理解, 构成本申请的一部 分, 本发明的示意性实施例及其说明用于解释本发明, 并不构成对本发明的 不当限定。 在附图中: 图 1是才艮据相关技术的 IEEE 802.16m标准下行控制结构的示意图; 图 2是根据本发明实施例的广播消息的资源指示信息的传输系统的示意 图; 图 3是根据本发明实施例的广播消息的资源指示信息的传输方法的一种 优选的流程图; 图 4是根据本发明实施例的单播业务控制信道结构的一种示意图; 图 5是根据本发明实施例的单播业务控制信道结构的另一种示意图; 图 6是根据本发明实施例的单播业务控制信道结构的又一种示意图; 图 7是根据本发明实施例的单播业务控制信道结构的又一种示意图; 图 8是才艮据本发明实施例的一种 SFH子帧结构的示意图。 具体实施方式 下文中将参考附图并结合实施例来详细说明本发明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互组合。 首先描述本发明实施例所釆用的广播消息资源指示信息的传输系统。 如图 2所示,根据本实施例的广播消息的资源指示信息的传输系统包括: 基站 21和终端 22。 在工作状态下, 基站 21 根据当前的传输条件设置传输方式, 并按照所 设置的传输方式将广播消息的资源指示信息发送给终端 22。 在接收端, 终端 22按照上述传输方式对上述广播消息的资源指示信息进行解码。 基站 21根据当前的传输条件设置传输方式包括以下之一:
1 )基站 21中的第一设置单元根据当前的传输条件将传输方式中的每个 参数分别设置为一个确定的值; 或者
2 )基站 21中的第二设置单元根据当前的传输条件将传输方式中的每个 参数分别设置为一个取值范围, 并从每个参数所在的取值范围中为该参数选 取一个确定的值; 或者 3 )基站 21中的第三设置单元根据当前的传输条件将传输方式中的一个 或多个参数分别设置为一个确定的值, 将传输方式中的其他参数分别设置为 一个取值范围, 并从其他参数中的每个参数所在的取值范围中为该参数选取 一个确定的值。 上述传输方式包括以下参数中的至少之一: 资源大小、 资源起始位置、 资源终止位置、 调制方式、 编码方式。 在本实施例中, 上述传输条件包括以下至少之一: 传输功率大小、 当前 信道质量状况、 用于传输的频率分区类型。 由于基站根据当前的传输条件来设置传输方式, 使得传输方式可以按照 不同的传输条件来动态调整, 从而保证了广播消息的资源指示信息的正确接 收。 基站 21和终端 22通过以下方法之一设置相同的传输方式:
1 ) 在从每个参数所在的取值范围中为该参数选取一个确定的值、 或从 上述其他参数中的每个参数所在的取值范围中为该参数选取一个确定的值 后, 基站向终端发送指示信息, 其中, 指示信息用于指示所选取的确定的值;
2 ) 在根据当前的传输条件将传输方式中的每个参数分别设置为一个确 定的值时, 终端才艮据当前的传输条件获取传输方式中的每个参数所对应的确 定的值;
3 ) 在根据当前的传输条件将传输方式中的一个或多个参数分别设置为 一个确定的值时, 终端才艮据当前的传输条件获取传输方式中的一个或多个参 数所对应的确定的值;
4 ) 基站向终端发送指示信息, 其中, 该指示信息用于指示基站所釆用 的传输方式。 进一步, 基站 21包括: 依次连接的调制编码单元 212和发送单元 211。 在工作状态下, 调制编码单元 212釆用与上述传输方式对应的调制编码 速率对上述广播消息的资源指示信息进行调制编码, 其中, 与上述传输方式 对应的调制编码速率小于或等于与单播消息或多播消息的资源指示信息的传 输方式对应的调制编码速率。 然后, 发送单元 211将广播消息的资源指示信 息发送给终端 22 , 优选的, 发送单元 211还可以向终端 22发送上述指示信 息。 由于与广播消息的资源指示信息的传输方式对应的调制编码速率小于与 单播消息或多播消息的资源指示信息的传输方式对应的调制编码速率,这样, 较低阶的调制编码方式有利于接收端对所接收到的数据进行解码, 因此进一 步提高了广播消息的资源指示信息的正确接收概率, 从而进一步提高了广播 消息的正确接收 4既率。 相应的, 终端 22包括: 依次连接的接收单元 221和解码单元 222。 在工作状态下, 接收单元 221接收发送单元 211发送的广播消息资源指 示信息。 优选的, 接收单元 221还可以接收发送单元 211发送的上述指示信 息。 在本实施例中, 上述指示信息设置在以下至少之一中: 非用户专有控制 信息单元、 扩展的非用户专有控制信息单元、 主超帧头、 辅超帧头、 管理消 息。 下面结合图 3所示的系统来描述本发明的广播消息资源指示信息的传输 方法。 图 3 是根据本发明实施例的广播消息资源指示信息的传输方法的流程 图。 如图 3所示, 广播消息资源指示信息的传输方法包括如下步骤:
S31 , 基站根据当前的传输条件设置传输方式; S32, 上述基站按照所设置的传输方式将广播消息的资源指示信息发送 给终端;
S33 , 上述终端按照上述传输方式对上述广播消息的资源指示信息进行 解码。 优选的, 基站根据当前的传输条件设置传输方式包括以下之一: 1 ) 根据当前的传输条件将传输方式中的每个参数分别设置为一个确定 的值; 或者
2 ) 根据当前的传输条件将传输方式中的每个参数分别设置为一个取值 范围, 并从每个参数所在的取值范围中为该参数选取一个确定的值; 或者
3 ) 根据当前的传输条件将传输方式中的一个或多个参数分别设置为一 个确定的值, 将传输方式中的其他参数分别设置为一个取值范围, 并从其他 参数中的每个参数所在的取值范围中为该参数选取一个确定的值。 优选的, 在从每个参数所在的取值范围中为该参数选取一个确定的值、 或从所述其他参数中的每个参数所在的取值范围中为该参数选取一个确定的 值后, 所述方法还包括: 所述基站向所述终端发送指示信息, 其中, 所述指 示信息用于指示所选取的确定的值。 优选的, 所述指示信息设置在以下至少之一中: 非用户专有控制信息单 元、 扩展的非用户专有控制信息单元、 主超帧头、 辅超帧头、 管理消息。 优选的, 在根据当前的传输条件将所述传输方式中的每个参数分别设置 为一个确定的值时, 所述终端才艮据所述当前的传输条件获取所述传输方式中 的每个参数所对应的所述确定的值; 在根据当前的传输条件将所述传输方式 中的一个或多个参数分别设置为一个确定的值时, 所述终端根据所述当前的 传输条件获取所述传输方式中的所述一个或多个参数所对应的所述确定的 值。 优选的, 上述传输方式包括以下参数中的至少之一: 资源大小、 资源起 始位置、 资源终止位置、 调制方式、 编码方式。 优选的, 编码方式包括以下至少之一: 信道编码器类型、 信道编码器的 编码速率、 重复次数。 优选的, 上述传输条件包括以下至少之一: 传输功率大小、 当前信道质 量状况、 用于传输的频率分区类型。 由于基站根据当前的传输条件来设置传输方式, 使得传输方式可以按照 不同的传输条件来动态调整, 从而保证了广播消息的资源指示信息的正确接 收。 优选的, 与所述传输方式对应的调制编码速率小于或等于与单播消息或 多播消息的资源指示信息的传输方式对应的调制编码速率。 优选的, 通过以下步骤获取所述调制编码速率: 计算调制阶数与编码速 率的乘积, 其中, 所述编码速率为所述信道编码器的编码速率与所述重复次 数的倒数的乘积。 优选的, 所述广播消息的资源指示信息位于扩展的非用户专有控制信息 单元内。 优选的,在终端按照传输方式对广播消息的资源指示信息进行解码之前, 基站和终端通过以下方法之一设置相同的传输方式:
1 ) 在从每个参数所在的取值范围中为该参数选取一个确定的值、 或从 其他参数中的每个参数所在的取值范围中为该参数选取一个确定的值后, 基 站向终端发送指示信息, 其中, 指示信息用于指示所选取的确定的值; 或者 2 ) 在根据当前的传输条件将传输方式中的每个参数分别设置为一个确 定的值时, 终端才艮据当前的传输条件获取传输方式中的每个参数所对应的确 定的值; 或者
3 ) 在根据当前的传输条件将传输方式中的一个或多个参数分别设置为 一个确定的值时, 终端才艮据当前的传输条件获取传输方式中的一个或多个参 数所对应的确定的值。 优选的, 指示信息设置在以下至少之一中: 非用户专有控制信息单元、 扩展的非用户专有控制信息单元、 主超帧头、 辅超帧头、 管理消息。 优选的, 在本实施例中, 与传输方式对应的调制编码速率小于或等于与 单播消息或多播消息的资源指示信息的传输方式对应的调制编码速率。这样, 较低的调制编码速率有利于接收端对所接收到的数据进行解码, 因此进一步 提高了广播消息的资源指示信息的正确接收概率, 从而进一步提高了广播消 息的正确接收概率。 在本发明中, 基站可以在当前的传输条件下设置不同的传输方式, 广播 消息的资源指示信息的传输方法也可以具有不同的操作流程, 下面将结合不 同的实施例对此力口以来描述。 实施例一 图 4是根据本发明实施例的单播业务控制信道结构的一种示意图。 如图 4所示,单播业务控制信道包括:混合自动重传请求反馈控制信道( HARQ FB AMAP )、 功率控制信道(PC AMAP )、 非用户专有控制信道( NUS AMAP )、 扩展的非用户专有的控制信道 (Ext. NUS AMAP ), 资源分配控制信道 (A AMAP ), 其中, 混合自动重传请求反馈控制信道用于发送 HARQ反馈控制 信息, 功率控制信道用于发送功率控制信息、 非用户专有控制信道和扩展的 非用户专有的控制信道均用于发送非用户专有控制信息(包括广播信息)、资 源分配控制信道用于发送单播的资源分配控制信息。 在该实施例中, 扩展的 非用户专有控制信道位于非用户专有控制信道的后面。 基于图 4所示的单播业务控制信道结构, 相应的广播消息的资源指示信 息的传输方法包括如下步骤:
S 1 , 基站设置指示信息。 具体的, 基站使用主频率分区 ( Primary FP ) 内非用户专有控制信息单元中 1个比特的信息域来标识当前子帧中是否存在 扩展的非用户专有控制信息, 同时使用扩展的非用户专有控制信息承载广播 消息的资源指示信息。 非用户专有控制信息的内容如表 1所示, 其中, 非用 户专有控制信息具有固定的二进制比特信息长度:
表 1
Figure imgf000012_0001
S2, 基站根据当前的传输条件设置传输方式, 并按照该传输方式发送扩 展的非用户专有控制信息给终端。 具体的, 基站以确定的调制方式 (例如 QPSK ), 确定的编码方式 (例如信道编码器为咬尾卷积编码器, 初始编码速 率为 1/4, 重复次数为 3 ), 确定的资源起始位置 (位于非用户专有控制信息 之后), 确定的资源大小(由扩展的非用户专有控制信息的比特长度决定)发 送扩展的非用户专有控制信息给终端。 假设基站是釆用 QPSK的调制方式, 初始编码速率为 1/2或 1/4且重复 次数为 1 的咬尾卷积编码方式发送单播消息的资源指示信息 (承载于 A AMAP 信道), 则与单播消息的资源指示信息的传输方式相应的调制编码速 率为 1 或 1/2, 而与广播消息的资源指示信息的传输方式相应的调制编码速 率为 1/6, 即在实施例中, 与广播消息的资源指示信息的传输方式对应的调 制编码速率小于与单播消息的资源指示信息的传输方式对应的调制编码速 率。 其中,扩展的非用户专有控制信息单元具有固定的二进制比特信息长度, 并且包括以下内容之一或其组合: 资源分配信息单元类型, HARQ数据包大 小, 资源索引, 长传输时间间隔指示符, 特定广播消息指示符, 广播消息配 置改变计数, 广播信道标识符, 广播消息的重复发送次数, 广播消息的重复 发送周期。
53 , 终端解码非用户专有控制信息, 判断是否存在扩展的非用户专有控 制信息。 如果存在, 则 居上述确定的调制方式, 编码方式, 资源起始位置 以及资源大小解出扩展的非用户专有控制信息,即广播消息的资源指示信息。 在本实施例中, 终端可以根据当前的传输条件来获取上述传输方式中的传输 参数。
54, 终端 居已正确解码的扩展的非用户专有控制信息内容在确定的时 频资源位置解出广播数据包或突发 (Burst ), 其中, 该广播数据包或突发中 可以包括一个或多个广播消息。 实施例二: 基于图 4所示的单播业务控制信道结构, 相应的广播消息的资源指示信 息的传输方法包括如下步骤:
S 1 , 基站设置指示信息。 具体的, 基站使用主频率分区 ( Primary FP ) 内非用户专有控制信息单元中 2个比特的信息域来标识当前子帧中是否存在 扩展的非用户专有控制信息, 以及该信息单元釆用的调制编码方式, 同时使 用扩展的非用户专有控制信息承载广播消息的资源指示信息, 非用户专有控 制信息的内容如下表 2所示, 其中非用户专有控制信息具有固定的二进制比 特信息长度: 表 2
字段名称 字段大小 字段说明
单播或组播资源 8比特 指示每个资源分配组中包括的单播或组播资 分配控制信道大 源分配信息单元数目
下行 HARQ反馈 1比特 指示使用哪一个参数计算下行 HARQ 反馈 信道索引参数 信道索引
上行 HARQ反馈 1比特 指示使用哪一个参数计算上行 HARQ 反馈 信道索引参数 信道索引
扩展的非用户专 2比特 00: 没有扩展的非用户专有控制信息 有控制信息是否 01 : 存在扩展的非用户专有控制信息, 且调 存在标志 制编码方式为 QPSK, 1/8 (初始码率为 1/4, 重复次数为 2 )
10: 存在扩展的非用户专有控制信息, 且调 制编码方式为 QPSK, 1/12 (初始码率为 1/4, 重复次数为 3 )
11 : 存在扩展的非用户专有控制信息, 且调 制编码方式为 QPSK, 1/16 (初始码率为 1/4, 重复次数为 4 )
S2 , 基站根据当前的传输条件设置传输方式, 并按照该传输方式发送扩 展的非用户专有控制信息给终端。 具体的, 基站以确定的资源起始位置 (位 于非用户专有控制信息之后),确定的资源大小(由扩展的非用户专有控制信 息的比特长度决定) 发送扩展的非用户专有控制信息给终端。 假设基站是釆用 QPSK的调制方式, 初始编码速率为 1/2或 1/4且重复 次数为 1 的咬尾卷积编码方式发送单播消息的资源指示信息 (承载于 A AMAP 信道), 则与单播消息的资源指示信息的传输方式相应的调制编码速 率为 1 或 1/2 , 而在该实施例中与广播消息的资源指示信息的传输方式相应 的调制编码速率为 1/4 , 1/6或 1/8 , 即在实施例中, 与广播消息的资源指示 信息的传输方式对应的调制编码速率小于与单播消息的资源指示信息的传输 方式对应的调制编码速率。 其中,扩展的非用户专有控制信息单元具有固定的二进制比特信息长度, 并且包括以下内容之一或其组合: 资源分配信息单元类型, HARQ数据包大 小, 资源索引, 长传输时间间隔指示符, 特定广播消息指示符, 广播消息配 置改变计数, 广播信道标识符, 广播消息的重复发送次数, 广播消息的重复 发送周期。
S3 , 终端解码非用户专有控制信息, 判断是否存在扩展的非用户专有控 制信息。 如果存在, 则才艮据确定的调制方式, 编码方式, 资源起始位置以及 资源大小解出扩展的非用户专有控制信息, 即广播消息的资源指示信息。 在 本实施例中, 终端可以才艮据当前的传输条件来获取上述传输方式中的传输参 数。 S4, 终端才艮据已正确解码的扩展的非用户专有控制信息内容在确定的时 频资源位置解出广播数据包或突发 (Burst ), 其中, 该广播数据包或突发中 可以包括一个或多个广播消息。 实施例三 基于图 4所示的单播业务控制信道结构, 相应的广播消息的资源指示信 息的传输方法包括如下步 4聚:
S 1 , 基站设置指示信息。 具体的, 基站使用主频率分区 ( Primary FP ) 内非用户专有控制信息单元中 1个比特的信息域来标识当前子帧中是否存在 扩展的非用户专有控制信息, 同时使用扩展的非用户专有控制信息承载广播 消息的资源指示信息。 非用户专有控制信息的内容如表 3所示, 其中, 非用 户专有控制信息具有固定的二进制比特信息长度:
表 3
Figure imgf000015_0001
S2, 基站根据当前的传输条件设置传输方式, 并按照该传输方式发送扩 展的非用户专有控制信息给终端。 具体的, 基于扩展的非用户专有控制信息 或单播业务控制信息所在的频率分区, 例如复用系数为 1的频率分区 (视为 当前的传输条件),基站将扩展的非用户专有控制信息单元釆用的调制编码方 式确定为一个取值范围, 例如, 如表 4所示, 该调制编码方式可为 QPSK 1/8 或 QPSK 1/16。 然后, 基站从调制编码方式的取值范围中选择一个值, 例如, QPSK 1/8 , 并发送指示信息给终端, 其中, 该指示信息指示调制编码方式为 QPSK 1/8 , 优选的, 该指示信息位于超帧头中。 然后, 基站以确定的资源起 始位置(位于非用户专有控制信息之后), 确定的资源大小(由扩展的非用户 专有控制信息的比特长度决定)发送扩展的非用户专有控制信息给终端。 表 4
Figure imgf000016_0001
假设基站是釆用 QPSK的调制方式, 初始编码速率为 1/2或 1/4且重复 次数为 1 的咬尾卷积编码方式发送单播消息的资源指示信息 (承载于 A AMAP 信道), 则与单播消息的资源指示信息的传输方式相应的调制编码速 率为 1 或 1/2 , 而在该实施例中与广播消息的资源指示信息的传输方式相应 的调制编码速率为 1/4或 1/8 , 即在本实施例中, 与广播消息的资源指示信息 的传输方式对应的调制编码速率小于与单播消息的资源指示信息的传输方式 对应的调制编码速率。 其中,扩展的非用户专有控制信息单元具有固定的二进制比特信息长度, 并且包括以下内容之一或其组合: 资源分配信息单元类型, HARQ数据包大 小, 资源索引, 长传输时间间隔指示符, 特定广播消息指示符, 广播消息配 置改变计数, 广播信道标识符, 广播消息的重复发送次数, 广播消息的重复 发送周期。
53 , 终端解码非用户专有控制信息, 判断是否存在扩展的非用户专有控 制信息。 如果存在, 则才艮据确定的调制方式, 编码方式, 资源起始位置以及 资源大小解出扩展的非用户专有控制信息, 即广播消息的资源指示信息。 在 本实施例中, 终端可以才艮据当前的传输条件来获取上述传输方式中的部分传 输参数: 编码方式, 资源起始位置以及资源大小, 此外, 终端还可以通过接 收基站发送的指示信息来获取调制方式。
54 , 终端 居已正确解码的扩展的非用户专有控制信息内容在确定的时 频资源位置解出广播数据包或突发 (Burst ), 其中, 该广播数据包或突发中 可以包括一个或多个广播消息。 此外, 图 5是根据本发明实施例的单播业务控制信道结构的另一种示意 图。 如图 5所示, 单播业务控制信道包括: 混合自动重传请求反馈控制信道 ( HARQ FB AMAP )、功率控制信道( PC AMAP )、非用户专有控制信道( NUS AMAP )、 扩展的非用户专有的控制信道 ( Ext. NUS AMAP ), 资源分配控制 信道 (A AMAP ), 其中, 混合自动重传请求反馈控制信道用于发送 HARQ 反馈控制信息、 功率控制信道用于发送功率控制信息、 非用户专有控制信道 和扩展的非用户专有的控制信道用于发送非用户专有控制信息 (包括广播信 息)、 资源分配控制信道用于发送单播的资源分配控制信息。 与图 4不同的是, 在图 5所示的扩展的非用户专有控制信道位于资源分 配控制信道的后面。 上述实施例一至实施例三中的广播消息的资源指示信息 的传输方法同样适用于图 5所示的单播业务控制信道结构。 实施例四 图 6是根据本发明实施例的单播业务控制信道结构的又一种示意图。 如 图 6所示,单播业务控制信道包括: 混合自动重传请求反馈控制信道( HARQ FB AMAP ),功率控制信道( PC AMAP ),非用户专有控制信道( NUS AMAP ), 广播资源分配控制信道 ( Broadcast A AMAP ) , 单播资源分配控制信道 ( Unicast A AMAP ),其中,混合自动重传请求反馈控制信道用于发送 HARQ 反馈控制信息、 功率控制信道用于发送功率控制信息、 非用户专有控制信道 用于发送非用户专有控制信息、 广播资源分配控制信道用于发送广播消息的 资源指示信息、 单播资源分配控制信道用于发送单播的资源分配控制信息。 在本实施例中, 广播资源分配控制信道位于非用户专有控制信道的后面。 基于图 6所示的单播业务控制信道结构, 相应的广播消息的资源指示信 息的传输方法包括如下步骤: S 1 , 基站设置指示信息, 用于指示当前帧是否存在广播消息的资源指示 信息。 具体的, 指示信息为掩码比特, 其中掩码比特是通过将循环冗余校验 比特与广播标识符进行掩码操作来获得的。
S2, 基站根据当前的传输条件设置传输方式, 并按照该传输方式发送广 播消息的资源指示信息给终端。 具体的, 基站以确定的调制方式 (例如 QPSK ), 确定的编码方式 (例如信道编码器为咬尾卷积编码器, 初始编码速 率为 1/4, 重复次数为 3 ), 确定的资源起始位置 (位于非用户专有控制信息 之后), 确定的资源大小(由广播消息的资源指示信息的比特长度决定)发送 广播消息的资源指示信息给终端。 假设基站是釆用 QPSK的调制方式, 初始编码速率为 1/2或 1/4且重复 次数为 1的咬尾卷积编码方式发送单播消息的资源指示信息(承载于 Unicast A AMAP信道), 则与单播消息的资源指示信息的传输方式相应的调制编码 速率为 1 或 1/2, 而与广播消息的资源指示信息的传输方式相应的调制编码 速率为 1/6, 即在实施例中, 与广播消息的资源指示信息的传输方式对应的 调制编码速率小于与单播消息的资源指示信息的传输方式对应的调制编码速 率。 其中, 广播消息的资源指示信息单元具有固定的二进制比特信息长度, 并且包括以下内容之一或其组合: 资源分配信息单元类型, HARQ数据包大 小, 资源索引, 长传输时间间隔指示符, 特定广播消息指示符, 广播消息配 置改变计数, 广播信道标识符, 广播消息的重复发送次数, 广播消息的重复 发送周期。
S3 , 终端通过盲检测的方式判断当前子帧是否存在广播消息的资源指示 信息单元。 具体的, 终端在接收到携带有掩码比特的数据源之后, 根据数据 源生成终端侧的循环冗余校验比特。 然后, 终端将终端侧的循环冗余校验比 特与广播标识符进行掩码操作获得终端侧的掩码比特。 然后, 将终端侧的掩 码比特与掩码比特进行比较, 若相同, 则终端确定出当前子帧中存在广播消 息资源指示信息。 如果存在, 则根据确定的调制方式, 编码方式, 资源起始位置以及资源 大小解出广播消息的资源指示信息。 在本实施例中, 终端可以根据当前的传 输条件来获取上述传输方式中的传输参数。 S4, 终端才艮据已正确解码的广播消息的资源指示信息内容在确定的时频 资源位置解出广播数据包或突发 (Burst ), 其中, 该广播数据包或突发中可 以包括一个或多个广播消息。 实施例五 基于图 6所示的单播业务控制信道结构, 相应的广播消息的资源指示信 息的传输方法包括如下步骤: 51 , 基站设置指示信息, 用于指示当前帧是否存在广播消息的资源指示 信息。 具体的, 指示信息为掩码比特, 其中掩码比特是通过将循环冗余校验 比特与广播标识符进行掩码操作来获得的。
52 , 基站根据当前的传输条件设置传输方式, 并按照该传输方式发送广 播消息的资源指示信息给终端。 具体的, 基于广播消息的资源指示信息或单 播业务控制信息所在的频率分区, 例如复用系数为 1的频率分区 (视为当前 的传输条件 ),基站将扩展的非用户专有控制信息单元釆用的调制编码方式确 定为一个取值范围, 例如, 如表 5所示, 该调制编码方式可以为 QPSK 1/8 或 QPSK 1/16。 然后, 基站从调制编码方式的取值范围中选择一个值, 例如, QPSK 1/8 , 并发送指示信息给终端, 其中, 该指示信息指示调制编码方式为 QPSK 1/8 , 优选的, 该指示信息位于超帧头中。 然后, 基站以确定的资源起 始位置(位于非用户专有控制信息之后), 确定的资源大小(由扩展的非用户 专有控制信息的比特长度决定)发送广播消息的资源指示信息给终端。 表 5
Figure imgf000019_0001
假设基站是釆用 QPSK的调制方式, 初始编码速率为 1/2或 1/4且重复 次数为 1的咬尾卷积编码方式发送单播消息的资源指示信息(承载于 Unicast A AMAP信道), 则与单播消息的资源指示信息的传输方式相应的调制编码 速率为 1 或 1/2 , 而在该实施例中与广播消息的资源指示信息的传输方式相 应的调制编码速率为 1/4或 1/8 , 即在实施例中, 与广播消息的资源指示信息 的传输方式对应的调制编码速率小于与单播消息的资源指示信息的传输方式 对应的调制编码速率。 其中, 广播消息的资源指示信息单元具有固定的二进制比特信息长度, 并且包括以下内容之一或其组合: 资源分配信息单元类型, HARQ数据包大 小, 资源索引, 长传输时间间隔指示符, 特定广播消息指示符, 广播消息配 置改变计数, 广播信道标识符, 广播消息的重复发送次数, 广播消息的重复 发送周期。 53 , 终端通过盲检测的方式判断当前子帧是否存在广播消息的资源指示 信息单元。 具体的, 终端在接收到携带有掩码比特的数据源之后, 根据数据 源生成终端侧的循环冗余校验比特。 然后, 终端将终端侧的循环冗余校验比 特与广播标识符进行掩码操作获得终端侧的掩码比特。 然后, 将终端侧的掩 码比特与掩码比特进行比较, 若相同, 则终端确定出当前子帧中存在广播消 息资源指示信息。 如果存在, 则根据确定的调制方式, 编码方式, 资源起始位置以及资源 大小解出广播消息的资源指示信息。 在本实施例中, 终端可以根据当前的传 输条件来获取上述传输方式中的部分传输参数: 编码方式, 资源起始位置以 及资源大小, 此外, 终端还可以通过接收基站发送的指示信息来获取调制方 式。
54, 终端才艮据已正确解码的广播消息的资源指示信息内容在确定的时频 资源位置解出广播数据包或突发 (Burst ), 其中, 该广播数据包或突发中可 以包括一个或多个广播消息。 此外, 图 7是根据本发明实施例的单播业务控制信道结构的又一种示意 图。 如图 7所示, 单播业务控制信道包括: 混合自动重传请求反馈控制信道 ( HARQ FB AMAP )、功率控制信道( PC AMAP )、非用户专有控制信道( NUS AMAP )、 单播资源分配控制信道 (Unicast A AMAP )、 广播资源分配控制信 道 ( Broadcast A AMAP ), 其中, 混合自动重传请求反馈控制信道用于发送 HARQ反馈控制信息、 功率控制信道用于发送功率控制信息、 非用户专有控 制信道用于发送非用户专有控制信息、 单播资源分配控制信道用于发送单播 的资源分配控制信息、 广播资源分配控制信道用于发送广播消息的资源指示 信息。 与图 6不同的是, 图 7中所示的广播资源分配控制信道位于单播资源分 配控制信道的后面。 上述实施例四至实施例五中的广播消息的资源指示信息 的传输方法同样适用于图 7所示的单播业务控制信道结构。 实施例六 图 8是才艮据本发明实施例的一种 SFH子帧结构的示意图。 如图 8所示, SFH 子帧包括: 主超帧头 (P-SFH )、 辅超帧头 (S-SFH )、 广播资源分配控 制信道 ( Broadcast A AMAP ) 以及单播业务控制信道 (A MAP ), 其中, 主 超帧头用于发送辅超帧头的解码信息、 辅超帧头用于发送系统信息、 广播资 源分配控制信道用于发送广播消息的资源指示信息、 单播业务控制信道用于 发送其它单播业务控制信息。 该实施例中, 广播资源分配控制信道位于辅超 帧头的后面。 基于图 8所示的 SFH子帧结构,相应的广播消息的资源指示信息的传输 方法包括如下步 4聚:
S 1 , 基站使用主超帧头 (P-SFH ) 内 1个比特的信息域来标识当前子帧 是否存在广播消息资源指示信息单元。 其中, 基站不使用除 SFH子帧以外的 其它子帧发送广播消息; 主超帧头内容如下面表 6所示, 其中, 主超帧头具 有固定的二进制比特信息长度。 表 6
Figure imgf000021_0001
S2, 基站根据当前的传输条件设置传输方式, 并按照该传输方式发送广 播消息的资源指示信息给终端。具体的,基于广播消息的资源指示信息或 SFH 子帧的发送功率, 例如以相对低的功率进行发送(视为当前的传输条件), 基 站将扩展的非用户专有控制信息单元釆用的调制编码方式确定为一个取值范 围, 例如, 如表 7所示, 该调制编码方式可以为 QPSK 1/8或 QPSK 1/16。 然 后, 基站从调制编码方式的取值范围中选择一个值, 例如, QPSK 1/8, 并发 送指示信息给终端, 其中, 该指示信息指示调制编码方式为 QPSK 1/8, 优选 的, 该指示信息位于超帧头中。 然后, 基站以确定的资源起始位置 (位于辅 超帧头之后),确定的资源大小(由广播消息的资源指示信息的比特长度决定) 发送广播消息的资源指示信息给终端。 表 7
Figure imgf000022_0001
假设基站是釆用 QPSK的调制方式, 初始编码速率为 1/2或 1/4且重复 次数为 1 的咬尾卷积编码方式发送单播消息的资源指示信息 (承载于 A AMAP 信道), 则与单播消息的资源指示信息的传输方式相应的调制编码速 率为 1 或 1/2 , 而在该实施例中与广播消息的资源指示信息的传输方式相应 的调制编码速率为 1/4或 1/8 , 即在实施例中, 与广播消息的资源指示信息的 传输方式对应的调制编码速率小于与单播消息的资源指示信息的传输方式对 应的调制编码速率。 其中, 广播消息的资源指示信息单元具有固定的二进制比特信息长度, 并且包括以下内容之一或其组合: 资源分配信息单元类型, HARQ数据包大 小, 资源索引, 长传输时间间隔指示符, 特定广播消息指示符, 广播消息配 置改变计数, 广播信道标识符, 广播消息的重复发送次数, 广播消息的重复 发送周期。
53 , 终端解码主超帧头, 判断是否存在广播消息资源指示信息, 如果存 在, 则才艮据确定的调制方式, 编码方式, 资源起始位置以及资源大小解出广 播消息的资源指示信息。 在本实施例中, 终端可以根据当前的传输条件来获 取上述传输方式中的部分传输参数: 编码方式, 资源起始位置以及资源大小, 此外, 终端还可以通过接收基站发送的指示信息来获取调制方式。
54, 终端才艮据已正确解码的广播消息资源指示信息内容在确定的时频资 源位置解出广播数据包或突发 (Burst ), 其中, 该广播数据包或突发中可以 包括一个或多个广播消息。 优选地, 广播标识符是指基站为广播消息保留的用作解码广播消息资源 指示信息的标识符, 其中, 该广播标识符具有与终端标识符相同或不同的形 式。 优选地, 广播消息资源指示信息单元釆用与其它消息资源指示信息单元 相同, 或比其它消息资源指示信息单元更加低阶的调制编码方式。 优选地, 广播消息资源指示信息单元釆用与其它消息资源指示信息单元 相同的调制编码方式是指, 广播消息资源指示信息单元釆用的调制编码方式 至少与其它消息资源指示信息单元釆用的调制编码方式之一相同。 在本实施例中, 上述广播消息资源指示信息的传输方法适用于 IEEE 802.16标准支持的系统。 本发明具有以下有益效果:
1 ) 由于基站根据当前的传输条件来设置传输方式, 使得传输方式可以 按照不同的传输条件来动态调整, 从而保证了广播消息的资源指示信息的正 确接收;
2 ) 在本发明中, 与广播消息的资源指示信息的传输方式对应的调制编 码速率小于与单播消息或多播消息的资源指示信息的传输方式对应的调制编 码速率, 这样, 较低的调制编码速率有利于接收端对所接收到的数据进行解 码, 因此进一步提高了广播消息的资源指示信息的正确接收概率, 从而进一 步提高了广播消息的正确接收概率。 显然, 本领域的技术人员应该明白, 上述的本发明的各模块或各步骤可 以用通用的计算装置来实现, 它们可以集中在单个的计算装置上, 或者分布 在多个计算装置所组成的网络上, 可选地, 它们可以用计算装置可执行的程 序代码来实现, 从而, 可以将它们存储在存储装置中由计算装置来执行, 并 且在某些情况下, 可以以不同于此处的顺序执行所示出或描述的步骤, 或者 将它们分别制作成各个集成电路模块, 或者将它们中的多个模块或步骤制作 成单个集成电路模块来实现。 这样, 本发明不限制于任何特定的硬件和软件 结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的 ^"神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。

Claims

权 利 要 求 书 一种广播消息的资源指示信息的传输方法, 其特征在于, 包括:
基站根据当前的传输条件设置传输方式;
所述基站按照所设置的传输方式将广播消息的资源指示信息发送给 终端;
所述终端按照所述传输方式对所述广播消息的资源指示信息进行解 码。 根据权利要求 1所述的方法, 其特征在于, 所述基站根据当前的传输条 件设置传输方式包括以下之一:
根据当前的传输条件将所述传输方式中的每个参数分别设置为一个 确定的值; 或者
根据当前的传输条件将所述传输方式中的每个参数分别设置为一个 取值范围,并从每个参数所在的取值范围中为该参数选取一个确定的值; 或者
根据当前的传输条件将所述传输方式中的一个或多个参数分别设置 为一个确定的值, 将所述传输方式中的其他参数分别设置为一个取值范 围, 并从所述其他参数中的每个参数所在的取值范围中为该参数选取一 个确定的值。 根据权利要求 2所述的方法, 其特征在于, 在从每个参数所在的取值范 围中为该参数选取一个确定的值、 或从所述其他参数中的每个参数所在 的取值范围中为该参数选取一个确定的值后, 所述方法还包括:
所述基站向所述终端发送指示信息, 其中, 所述指示信息用于指示 所选取的确定的值。 根据权利要求 2所述的方法, 其特征在于, 还包括:
在根据当前的传输条件将所述传输方式中的每个参数分别设置为一 个确定的值时, 所述终端才艮据所述当前的传输条件获取所述传输方式中 的每个参数所对应的所述确定的值; 在根据当前的传输条件将所述传输方式中的一个或多个参数分别设 置为一个确定的值时, 所述终端根据所述当前的传输条件获取所述传输 方式中的所述一个或多个参数所对应的所述确定的值。
5. 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 所述传输方式 包括以下参数中的至少之一: 资源大小、 资源起始位置、 资源终止位置、 调制方式、 编码方式。
6. 根据权利要求 5所述的方法, 其特征在于, 所述编码方式包括以下至少 之一: 信道编码器类型、 信道编码器的编码速率、 重复次数。
7. 根据权利要求 3所述的方法, 所述指示信息设置在以下至少之一中: 非 用户专有控制信息单元、 扩展的非用户专有控制信息单元、 主超帧头、 辅超帧头、 管理消息。
8. 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 所述当前的传 输条件包括以下至少之一: 传输功率大小、 当前信道质量状况、 用于传 输的频率分区类型。
9. 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 与所述传输方 式对应的调制编码速率小于或等于与单播消息或多播消息的资源指示信 息的传输方式对应的调制编码速率。
10. 根据权利要求 9所述的方法, 其特征在于, 通过以下步骤获取所述调制 编码速率:
计算调制阶数与编码速率的乘积, 其中, 所述编码速率为所述信道 编码器的编码速率与所述重复次数的倒数的乘积。
11. 根据权利要求 1至 4中任一项所述的方法, 其特征在于, 所述广播消息 的资源指示信息位于扩展的非用户专有控制信息单元内。
12. 一种广播消息的资源指示信息的传输系统, 包括基站和终端, 其特征在 于,
所述基站, 用于根据当前的传输条件设置传输方式, 并按照所设置 的传输方式将广播消息的资源指示信息发送给终端;
所述终端, 用于按照所述传输方式对所述广播消息的资源指示信息 进行解码。
13. 根据权利要求 12所述的系统, 其特征在于, 所述基站包括:
发送单元, 用于向所述终端发送指示信息, 其中, 所述指示信息用 于指示所述传输方式。
14. 根据权利要求 13所述的系统, 其特征在于, 所述基站还包括:
调制编码单元, 用于釆用与所述传输方式对应的调制编码速率对所 述广播消息的资源指示信息进行调制编码, 其中, 所述与所述传输方式 对应的调制编码速率小于或等于与单播消息或多播消息的资源指示信息 的传输方式对应的调制编码速率。
15. 根据权利要求 13所述的系统,其特征在于,所述基站包括以下至少之一: 第一设置单元, 用于根据当前的传输条件将所述传输方式中的每个 参数分别设置为一个确定的值;
第二设置单元, 用于根据当前的传输条件将所述传输方式中的每个 参数分别设置为一个取值范围, 并从每个参数所在的取值范围中为该参 数选取一个确定的值;
第三设置单元, 用于根据当前的传输条件将所述传输方式中的一个 或多个参数分别设置为一个确定的值, 将所述传输方式中的其他参数分 别设置为一个取值范围, 并从所述其他参数中的每个参数所在的取值范 围中为该参数选取一个确定的值。
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